Accessory for a drinking straw



FIG. 1 is a front right top perspective view of the accessory for a drinking straw, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a left perspective view thereof, shown in use.

The broken lines shown in FIG. 8 are environment and form no part of the claimed design. 

CLAIM The ornamental design for an accessory for a drinking straw, as shown and described. 